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1 //===-- llvm/Support/ELF.h - ELF constants and data structures --*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This header contains common, non-processor-specific data structures and
11 // constants for the ELF file format.
12 //
13 // The details of the ELF32 bits in this file are largely based on the Tool
14 // Interface Standard (TIS) Executable and Linking Format (ELF) Specification
15 // Version 1.2, May 1995. The ELF64 stuff is based on ELF-64 Object File Format
16 // Version 1.5, Draft 2, May 1998 as well as OpenBSD header files.
17 //
18 //===----------------------------------------------------------------------===//
19 
20 // BEGIN android-changed
21 #ifndef ART_RUNTIME_ELF_H_
22 #define ART_RUNTIME_ELF_H_
23 // END android-changed
24 
25 // BEGIN android-changed
26 #include <stdint.h>
27 #include <string.h>
28 // END android-changed
29 
30 typedef uint32_t Elf32_Addr; // Program address
31 typedef uint32_t Elf32_Off;  // File offset
32 typedef uint16_t Elf32_Half;
33 typedef uint32_t Elf32_Word;
34 typedef int32_t  Elf32_Sword;
35 
36 typedef uint64_t Elf64_Addr;
37 typedef uint64_t Elf64_Off;
38 typedef uint16_t Elf64_Half;
39 typedef uint32_t Elf64_Word;
40 typedef int32_t  Elf64_Sword;
41 typedef uint64_t Elf64_Xword;
42 typedef int64_t  Elf64_Sxword;
43 
44 // Object file magic string.
45 static const char ElfMagic[] = { 0x7f, 'E', 'L', 'F', '\0' };
46 
47 // e_ident size and indices.
48 enum {
49   EI_MAG0       = 0,          // File identification index.
50   EI_MAG1       = 1,          // File identification index.
51   EI_MAG2       = 2,          // File identification index.
52   EI_MAG3       = 3,          // File identification index.
53   EI_CLASS      = 4,          // File class.
54   EI_DATA       = 5,          // Data encoding.
55   EI_VERSION    = 6,          // File version.
56   EI_OSABI      = 7,          // OS/ABI identification.
57   EI_ABIVERSION = 8,          // ABI version.
58   EI_PAD        = 9,          // Start of padding bytes.
59   EI_NIDENT     = 16          // Number of bytes in e_ident.
60 };
61 
62 // BEGIN android-added for <elf.h> compat
63 const char ELFMAG0 = ElfMagic[EI_MAG0];
64 const char ELFMAG1 = ElfMagic[EI_MAG1];
65 const char ELFMAG2 = ElfMagic[EI_MAG2];
66 const char ELFMAG3 = ElfMagic[EI_MAG3];
67 // END android-added for <elf.h> compat
68 
69 struct Elf32_Ehdr {
70   unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes
71   Elf32_Half    e_type;      // Type of file (see ET_* below)
72   Elf32_Half    e_machine;   // Required architecture for this file (see EM_*)
73   Elf32_Word    e_version;   // Must be equal to 1
74   Elf32_Addr    e_entry;     // Address to jump to in order to start program
75   Elf32_Off     e_phoff;     // Program header table's file offset, in bytes
76   Elf32_Off     e_shoff;     // Section header table's file offset, in bytes
77   Elf32_Word    e_flags;     // Processor-specific flags
78   Elf32_Half    e_ehsize;    // Size of ELF header, in bytes
79   Elf32_Half    e_phentsize; // Size of an entry in the program header table
80   Elf32_Half    e_phnum;     // Number of entries in the program header table
81   Elf32_Half    e_shentsize; // Size of an entry in the section header table
82   Elf32_Half    e_shnum;     // Number of entries in the section header table
83   Elf32_Half    e_shstrndx;  // Sect hdr table index of sect name string table
checkMagicElf32_Ehdr84   bool checkMagic() const {
85     return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
86   }
getFileClassElf32_Ehdr87   unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
getDataEncodingElf32_Ehdr88   unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
89 };
90 
91 // 64-bit ELF header. Fields are the same as for ELF32, but with different
92 // types (see above).
93 struct Elf64_Ehdr {
94   unsigned char e_ident[EI_NIDENT];
95   Elf64_Half    e_type;
96   Elf64_Half    e_machine;
97   Elf64_Word    e_version;
98   Elf64_Addr    e_entry;
99   Elf64_Off     e_phoff;
100   Elf64_Off     e_shoff;
101   Elf64_Word    e_flags;
102   Elf64_Half    e_ehsize;
103   Elf64_Half    e_phentsize;
104   Elf64_Half    e_phnum;
105   Elf64_Half    e_shentsize;
106   Elf64_Half    e_shnum;
107   Elf64_Half    e_shstrndx;
checkMagicElf64_Ehdr108   bool checkMagic() const {
109     return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
110   }
getFileClassElf64_Ehdr111   unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
getDataEncodingElf64_Ehdr112   unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
113 };
114 
115 // File types
116 enum {
117   ET_NONE   = 0,      // No file type
118   ET_REL    = 1,      // Relocatable file
119   ET_EXEC   = 2,      // Executable file
120   ET_DYN    = 3,      // Shared object file
121   ET_CORE   = 4,      // Core file
122   ET_LOPROC = 0xff00, // Beginning of processor-specific codes
123   ET_HIPROC = 0xffff  // Processor-specific
124 };
125 
126 // Versioning
127 enum {
128   EV_NONE = 0,
129   EV_CURRENT = 1
130 };
131 
132 // Machine architectures
133 enum {
134   EM_NONE          = 0, // No machine
135   EM_M32           = 1, // AT&T WE 32100
136   EM_SPARC         = 2, // SPARC
137   EM_386           = 3, // Intel 386
138   EM_68K           = 4, // Motorola 68000
139   EM_88K           = 5, // Motorola 88000
140   EM_486           = 6, // Intel 486 (deprecated)
141   EM_860           = 7, // Intel 80860
142   EM_MIPS          = 8, // MIPS R3000
143   EM_S370          = 9, // IBM System/370
144   EM_MIPS_RS3_LE   = 10, // MIPS RS3000 Little-endian
145   EM_PARISC        = 15, // Hewlett-Packard PA-RISC
146   EM_VPP500        = 17, // Fujitsu VPP500
147   EM_SPARC32PLUS   = 18, // Enhanced instruction set SPARC
148   EM_960           = 19, // Intel 80960
149   EM_PPC           = 20, // PowerPC
150   EM_PPC64         = 21, // PowerPC64
151   EM_S390          = 22, // IBM System/390
152   EM_SPU           = 23, // IBM SPU/SPC
153   EM_V800          = 36, // NEC V800
154   EM_FR20          = 37, // Fujitsu FR20
155   EM_RH32          = 38, // TRW RH-32
156   EM_RCE           = 39, // Motorola RCE
157   EM_ARM           = 40, // ARM
158   EM_ALPHA         = 41, // DEC Alpha
159   EM_SH            = 42, // Hitachi SH
160   EM_SPARCV9       = 43, // SPARC V9
161   EM_TRICORE       = 44, // Siemens TriCore
162   EM_ARC           = 45, // Argonaut RISC Core
163   EM_H8_300        = 46, // Hitachi H8/300
164   EM_H8_300H       = 47, // Hitachi H8/300H
165   EM_H8S           = 48, // Hitachi H8S
166   EM_H8_500        = 49, // Hitachi H8/500
167   EM_IA_64         = 50, // Intel IA-64 processor architecture
168   EM_MIPS_X        = 51, // Stanford MIPS-X
169   EM_COLDFIRE      = 52, // Motorola ColdFire
170   EM_68HC12        = 53, // Motorola M68HC12
171   EM_MMA           = 54, // Fujitsu MMA Multimedia Accelerator
172   EM_PCP           = 55, // Siemens PCP
173   EM_NCPU          = 56, // Sony nCPU embedded RISC processor
174   EM_NDR1          = 57, // Denso NDR1 microprocessor
175   EM_STARCORE      = 58, // Motorola Star*Core processor
176   EM_ME16          = 59, // Toyota ME16 processor
177   EM_ST100         = 60, // STMicroelectronics ST100 processor
178   EM_TINYJ         = 61, // Advanced Logic Corp. TinyJ embedded processor family
179   EM_X86_64        = 62, // AMD x86-64 architecture
180   EM_PDSP          = 63, // Sony DSP Processor
181   EM_PDP10         = 64, // Digital Equipment Corp. PDP-10
182   EM_PDP11         = 65, // Digital Equipment Corp. PDP-11
183   EM_FX66          = 66, // Siemens FX66 microcontroller
184   EM_ST9PLUS       = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller
185   EM_ST7           = 68, // STMicroelectronics ST7 8-bit microcontroller
186   EM_68HC16        = 69, // Motorola MC68HC16 Microcontroller
187   EM_68HC11        = 70, // Motorola MC68HC11 Microcontroller
188   EM_68HC08        = 71, // Motorola MC68HC08 Microcontroller
189   EM_68HC05        = 72, // Motorola MC68HC05 Microcontroller
190   EM_SVX           = 73, // Silicon Graphics SVx
191   EM_ST19          = 74, // STMicroelectronics ST19 8-bit microcontroller
192   EM_VAX           = 75, // Digital VAX
193   EM_CRIS          = 76, // Axis Communications 32-bit embedded processor
194   EM_JAVELIN       = 77, // Infineon Technologies 32-bit embedded processor
195   EM_FIREPATH      = 78, // Element 14 64-bit DSP Processor
196   EM_ZSP           = 79, // LSI Logic 16-bit DSP Processor
197   EM_MMIX          = 80, // Donald Knuth's educational 64-bit processor
198   EM_HUANY         = 81, // Harvard University machine-independent object files
199   EM_PRISM         = 82, // SiTera Prism
200   EM_AVR           = 83, // Atmel AVR 8-bit microcontroller
201   EM_FR30          = 84, // Fujitsu FR30
202   EM_D10V          = 85, // Mitsubishi D10V
203   EM_D30V          = 86, // Mitsubishi D30V
204   EM_V850          = 87, // NEC v850
205   EM_M32R          = 88, // Mitsubishi M32R
206   EM_MN10300       = 89, // Matsushita MN10300
207   EM_MN10200       = 90, // Matsushita MN10200
208   EM_PJ            = 91, // picoJava
209   EM_OPENRISC      = 92, // OpenRISC 32-bit embedded processor
210   EM_ARC_COMPACT   = 93, // ARC International ARCompact processor (old
211                          // spelling/synonym: EM_ARC_A5)
212   EM_XTENSA        = 94, // Tensilica Xtensa Architecture
213   EM_VIDEOCORE     = 95, // Alphamosaic VideoCore processor
214   EM_TMM_GPP       = 96, // Thompson Multimedia General Purpose Processor
215   EM_NS32K         = 97, // National Semiconductor 32000 series
216   EM_TPC           = 98, // Tenor Network TPC processor
217   EM_SNP1K         = 99, // Trebia SNP 1000 processor
218   EM_ST200         = 100, // STMicroelectronics (www.st.com) ST200
219   EM_IP2K          = 101, // Ubicom IP2xxx microcontroller family
220   EM_MAX           = 102, // MAX Processor
221   EM_CR            = 103, // National Semiconductor CompactRISC microprocessor
222   EM_F2MC16        = 104, // Fujitsu F2MC16
223   EM_MSP430        = 105, // Texas Instruments embedded microcontroller msp430
224   EM_BLACKFIN      = 106, // Analog Devices Blackfin (DSP) processor
225   EM_SE_C33        = 107, // S1C33 Family of Seiko Epson processors
226   EM_SEP           = 108, // Sharp embedded microprocessor
227   EM_ARCA          = 109, // Arca RISC Microprocessor
228   EM_UNICORE       = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC
229                           // of Peking University
230   EM_EXCESS        = 111, // eXcess: 16/32/64-bit configurable embedded CPU
231   EM_DXP           = 112, // Icera Semiconductor Inc. Deep Execution Processor
232   EM_ALTERA_NIOS2  = 113, // Altera Nios II soft-core processor
233   EM_CRX           = 114, // National Semiconductor CompactRISC CRX
234   EM_XGATE         = 115, // Motorola XGATE embedded processor
235   EM_C166          = 116, // Infineon C16x/XC16x processor
236   EM_M16C          = 117, // Renesas M16C series microprocessors
237   EM_DSPIC30F      = 118, // Microchip Technology dsPIC30F Digital Signal
238                           // Controller
239   EM_CE            = 119, // Freescale Communication Engine RISC core
240   EM_M32C          = 120, // Renesas M32C series microprocessors
241   EM_TSK3000       = 131, // Altium TSK3000 core
242   EM_RS08          = 132, // Freescale RS08 embedded processor
243   EM_SHARC         = 133, // Analog Devices SHARC family of 32-bit DSP
244                           // processors
245   EM_ECOG2         = 134, // Cyan Technology eCOG2 microprocessor
246   EM_SCORE7        = 135, // Sunplus S+core7 RISC processor
247   EM_DSP24         = 136, // New Japan Radio (NJR) 24-bit DSP Processor
248   EM_VIDEOCORE3    = 137, // Broadcom VideoCore III processor
249   EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture
250   EM_SE_C17        = 139, // Seiko Epson C17 family
251   EM_TI_C6000      = 140, // The Texas Instruments TMS320C6000 DSP family
252   EM_TI_C2000      = 141, // The Texas Instruments TMS320C2000 DSP family
253   EM_TI_C5500      = 142, // The Texas Instruments TMS320C55x DSP family
254   EM_MMDSP_PLUS    = 160, // STMicroelectronics 64bit VLIW Data Signal Processor
255   EM_CYPRESS_M8C   = 161, // Cypress M8C microprocessor
256   EM_R32C          = 162, // Renesas R32C series microprocessors
257   EM_TRIMEDIA      = 163, // NXP Semiconductors TriMedia architecture family
258   EM_HEXAGON       = 164, // Qualcomm Hexagon processor
259   EM_8051          = 165, // Intel 8051 and variants
260   EM_STXP7X        = 166, // STMicroelectronics STxP7x family of configurable
261                           // and extensible RISC processors
262   EM_NDS32         = 167, // Andes Technology compact code size embedded RISC
263                           // processor family
264   EM_ECOG1         = 168, // Cyan Technology eCOG1X family
265   EM_ECOG1X        = 168, // Cyan Technology eCOG1X family
266   EM_MAXQ30        = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers
267   EM_XIMO16        = 170, // New Japan Radio (NJR) 16-bit DSP Processor
268   EM_MANIK         = 171, // M2000 Reconfigurable RISC Microprocessor
269   EM_CRAYNV2       = 172, // Cray Inc. NV2 vector architecture
270   EM_RX            = 173, // Renesas RX family
271   EM_METAG         = 174, // Imagination Technologies META processor
272                           // architecture
273   EM_MCST_ELBRUS   = 175, // MCST Elbrus general purpose hardware architecture
274   EM_ECOG16        = 176, // Cyan Technology eCOG16 family
275   EM_CR16          = 177, // National Semiconductor CompactRISC CR16 16-bit
276                           // microprocessor
277   EM_ETPU          = 178, // Freescale Extended Time Processing Unit
278   EM_SLE9X         = 179, // Infineon Technologies SLE9X core
279   EM_L10M          = 180, // Intel L10M
280   EM_K10M          = 181, // Intel K10M
281   EM_AARCH64       = 183, // ARM AArch64
282   EM_AVR32         = 185, // Atmel Corporation 32-bit microprocessor family
283   EM_STM8          = 186, // STMicroeletronics STM8 8-bit microcontroller
284   EM_TILE64        = 187, // Tilera TILE64 multicore architecture family
285   EM_TILEPRO       = 188, // Tilera TILEPro multicore architecture family
286   EM_CUDA          = 190, // NVIDIA CUDA architecture
287   EM_TILEGX        = 191, // Tilera TILE-Gx multicore architecture family
288   EM_CLOUDSHIELD   = 192, // CloudShield architecture family
289   EM_COREA_1ST     = 193, // KIPO-KAIST Core-A 1st generation processor family
290   EM_COREA_2ND     = 194, // KIPO-KAIST Core-A 2nd generation processor family
291   EM_ARC_COMPACT2  = 195, // Synopsys ARCompact V2
292   EM_OPEN8         = 196, // Open8 8-bit RISC soft processor core
293   EM_RL78          = 197, // Renesas RL78 family
294   EM_VIDEOCORE5    = 198, // Broadcom VideoCore V processor
295   EM_78KOR         = 199, // Renesas 78KOR family
296   EM_56800EX       = 200  // Freescale 56800EX Digital Signal Controller (DSC)
297 };
298 
299 // Object file classes.
300 enum {
301   ELFCLASSNONE = 0,
302   ELFCLASS32 = 1, // 32-bit object file
303   ELFCLASS64 = 2  // 64-bit object file
304 };
305 
306 // Object file byte orderings.
307 enum {
308   ELFDATANONE = 0, // Invalid data encoding.
309   ELFDATA2LSB = 1, // Little-endian object file
310   ELFDATA2MSB = 2  // Big-endian object file
311 };
312 
313 // OS ABI identification.
314 enum {
315   ELFOSABI_NONE = 0,          // UNIX System V ABI
316   ELFOSABI_HPUX = 1,          // HP-UX operating system
317   ELFOSABI_NETBSD = 2,        // NetBSD
318   ELFOSABI_GNU = 3,           // GNU/Linux
319   ELFOSABI_LINUX = 3,         // Historical alias for ELFOSABI_GNU.
320   ELFOSABI_HURD = 4,          // GNU/Hurd
321   ELFOSABI_SOLARIS = 6,       // Solaris
322   ELFOSABI_AIX = 7,           // AIX
323   ELFOSABI_IRIX = 8,          // IRIX
324   ELFOSABI_FREEBSD = 9,       // FreeBSD
325   ELFOSABI_TRU64 = 10,        // TRU64 UNIX
326   ELFOSABI_MODESTO = 11,      // Novell Modesto
327   ELFOSABI_OPENBSD = 12,      // OpenBSD
328   ELFOSABI_OPENVMS = 13,      // OpenVMS
329   ELFOSABI_NSK = 14,          // Hewlett-Packard Non-Stop Kernel
330   ELFOSABI_AROS = 15,         // AROS
331   ELFOSABI_FENIXOS = 16,      // FenixOS
332   ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
333   ELFOSABI_C6000_LINUX = 65,  // Linux TMS320C6000
334   ELFOSABI_ARM = 97,          // ARM
335   ELFOSABI_STANDALONE = 255   // Standalone (embedded) application
336 };
337 
338 // X86_64 relocations.
339 enum {
340   R_X86_64_NONE       = 0,
341   R_X86_64_64         = 1,
342   R_X86_64_PC32       = 2,
343   R_X86_64_GOT32      = 3,
344   R_X86_64_PLT32      = 4,
345   R_X86_64_COPY       = 5,
346   R_X86_64_GLOB_DAT   = 6,
347   R_X86_64_JUMP_SLOT  = 7,
348   R_X86_64_RELATIVE   = 8,
349   R_X86_64_GOTPCREL   = 9,
350   R_X86_64_32         = 10,
351   R_X86_64_32S        = 11,
352   R_X86_64_16         = 12,
353   R_X86_64_PC16       = 13,
354   R_X86_64_8          = 14,
355   R_X86_64_PC8        = 15,
356   R_X86_64_DTPMOD64   = 16,
357   R_X86_64_DTPOFF64   = 17,
358   R_X86_64_TPOFF64    = 18,
359   R_X86_64_TLSGD      = 19,
360   R_X86_64_TLSLD      = 20,
361   R_X86_64_DTPOFF32   = 21,
362   R_X86_64_GOTTPOFF   = 22,
363   R_X86_64_TPOFF32    = 23,
364   R_X86_64_PC64       = 24,
365   R_X86_64_GOTOFF64   = 25,
366   R_X86_64_GOTPC32    = 26,
367   R_X86_64_GOT64      = 27,
368   R_X86_64_GOTPCREL64 = 28,
369   R_X86_64_GOTPC64    = 29,
370   R_X86_64_GOTPLT64   = 30,
371   R_X86_64_PLTOFF64   = 31,
372   R_X86_64_SIZE32     = 32,
373   R_X86_64_SIZE64     = 33,
374   R_X86_64_GOTPC32_TLSDESC = 34,
375   R_X86_64_TLSDESC_CALL    = 35,
376   R_X86_64_TLSDESC    = 36,
377   R_X86_64_IRELATIVE  = 37
378 };
379 
380 // i386 relocations.
381 // TODO: this is just a subset
382 enum {
383   R_386_NONE          = 0,
384   R_386_32            = 1,
385   R_386_PC32          = 2,
386   R_386_GOT32         = 3,
387   R_386_PLT32         = 4,
388   R_386_COPY          = 5,
389   R_386_GLOB_DAT      = 6,
390   R_386_JUMP_SLOT     = 7,
391   R_386_RELATIVE      = 8,
392   R_386_GOTOFF        = 9,
393   R_386_GOTPC         = 10,
394   R_386_32PLT         = 11,
395   R_386_TLS_TPOFF     = 14,
396   R_386_TLS_IE        = 15,
397   R_386_TLS_GOTIE     = 16,
398   R_386_TLS_LE        = 17,
399   R_386_TLS_GD        = 18,
400   R_386_TLS_LDM       = 19,
401   R_386_16            = 20,
402   R_386_PC16          = 21,
403   R_386_8             = 22,
404   R_386_PC8           = 23,
405   R_386_TLS_GD_32     = 24,
406   R_386_TLS_GD_PUSH   = 25,
407   R_386_TLS_GD_CALL   = 26,
408   R_386_TLS_GD_POP    = 27,
409   R_386_TLS_LDM_32    = 28,
410   R_386_TLS_LDM_PUSH  = 29,
411   R_386_TLS_LDM_CALL  = 30,
412   R_386_TLS_LDM_POP   = 31,
413   R_386_TLS_LDO_32    = 32,
414   R_386_TLS_IE_32     = 33,
415   R_386_TLS_LE_32     = 34,
416   R_386_TLS_DTPMOD32  = 35,
417   R_386_TLS_DTPOFF32  = 36,
418   R_386_TLS_TPOFF32   = 37,
419   R_386_TLS_GOTDESC   = 39,
420   R_386_TLS_DESC_CALL = 40,
421   R_386_TLS_DESC      = 41,
422   R_386_IRELATIVE     = 42,
423   R_386_NUM           = 43
424 };
425 
426 // ELF Relocation types for PPC32
427 enum {
428   R_PPC_NONE                  = 0,      /* No relocation. */
429   R_PPC_ADDR32                = 1,
430   R_PPC_ADDR24                = 2,
431   R_PPC_ADDR16                = 3,
432   R_PPC_ADDR16_LO             = 4,
433   R_PPC_ADDR16_HI             = 5,
434   R_PPC_ADDR16_HA             = 6,
435   R_PPC_ADDR14                = 7,
436   R_PPC_ADDR14_BRTAKEN        = 8,
437   R_PPC_ADDR14_BRNTAKEN       = 9,
438   R_PPC_REL24                 = 10,
439   R_PPC_REL14                 = 11,
440   R_PPC_REL14_BRTAKEN         = 12,
441   R_PPC_REL14_BRNTAKEN        = 13,
442   R_PPC_GOT16                 = 14,
443   R_PPC_GOT16_LO              = 15,
444   R_PPC_GOT16_HI              = 16,
445   R_PPC_GOT16_HA              = 17,
446   R_PPC_REL32                 = 26,
447   R_PPC_TLS                   = 67,
448   R_PPC_DTPMOD32              = 68,
449   R_PPC_TPREL16               = 69,
450   R_PPC_TPREL16_LO            = 70,
451   R_PPC_TPREL16_HI            = 71,
452   R_PPC_TPREL16_HA            = 72,
453   R_PPC_TPREL32               = 73,
454   R_PPC_DTPREL16              = 74,
455   R_PPC_DTPREL16_LO           = 75,
456   R_PPC_DTPREL16_HI           = 76,
457   R_PPC_DTPREL16_HA           = 77,
458   R_PPC_DTPREL32              = 78,
459   R_PPC_GOT_TLSGD16           = 79,
460   R_PPC_GOT_TLSGD16_LO        = 80,
461   R_PPC_GOT_TLSGD16_HI        = 81,
462   R_PPC_GOT_TLSGD16_HA        = 82,
463   R_PPC_GOT_TLSLD16           = 83,
464   R_PPC_GOT_TLSLD16_LO        = 84,
465   R_PPC_GOT_TLSLD16_HI        = 85,
466   R_PPC_GOT_TLSLD16_HA        = 86,
467   R_PPC_GOT_TPREL16           = 87,
468   R_PPC_GOT_TPREL16_LO        = 88,
469   R_PPC_GOT_TPREL16_HI        = 89,
470   R_PPC_GOT_TPREL16_HA        = 90,
471   R_PPC_GOT_DTPREL16          = 91,
472   R_PPC_GOT_DTPREL16_LO       = 92,
473   R_PPC_GOT_DTPREL16_HI       = 93,
474   R_PPC_GOT_DTPREL16_HA       = 94,
475   R_PPC_TLSGD                 = 95,
476   R_PPC_TLSLD                 = 96,
477   R_PPC_REL16                 = 249,
478   R_PPC_REL16_LO              = 250,
479   R_PPC_REL16_HI              = 251,
480   R_PPC_REL16_HA              = 252
481 };
482 
483 // ELF Relocation types for PPC64
484 enum {
485   R_PPC64_NONE                = 0,
486   R_PPC64_ADDR32              = 1,
487   R_PPC64_ADDR24              = 2,
488   R_PPC64_ADDR16              = 3,
489   R_PPC64_ADDR16_LO           = 4,
490   R_PPC64_ADDR16_HI           = 5,
491   R_PPC64_ADDR16_HA           = 6,
492   R_PPC64_ADDR14              = 7,
493   R_PPC64_ADDR14_BRTAKEN      = 8,
494   R_PPC64_ADDR14_BRNTAKEN     = 9,
495   R_PPC64_REL24               = 10,
496   R_PPC64_REL14               = 11,
497   R_PPC64_REL14_BRTAKEN       = 12,
498   R_PPC64_REL14_BRNTAKEN      = 13,
499   R_PPC64_GOT16               = 14,
500   R_PPC64_GOT16_LO            = 15,
501   R_PPC64_GOT16_HI            = 16,
502   R_PPC64_GOT16_HA            = 17,
503   R_PPC64_REL32               = 26,
504   R_PPC64_ADDR64              = 38,
505   R_PPC64_ADDR16_HIGHER       = 39,
506   R_PPC64_ADDR16_HIGHERA      = 40,
507   R_PPC64_ADDR16_HIGHEST      = 41,
508   R_PPC64_ADDR16_HIGHESTA     = 42,
509   R_PPC64_REL64               = 44,
510   R_PPC64_TOC16               = 47,
511   R_PPC64_TOC16_LO            = 48,
512   R_PPC64_TOC16_HI            = 49,
513   R_PPC64_TOC16_HA            = 50,
514   R_PPC64_TOC                 = 51,
515   R_PPC64_ADDR16_DS           = 56,
516   R_PPC64_ADDR16_LO_DS        = 57,
517   R_PPC64_GOT16_DS            = 58,
518   R_PPC64_GOT16_LO_DS         = 59,
519   R_PPC64_TOC16_DS            = 63,
520   R_PPC64_TOC16_LO_DS         = 64,
521   R_PPC64_TLS                 = 67,
522   R_PPC64_DTPMOD64            = 68,
523   R_PPC64_TPREL16             = 69,
524   R_PPC64_TPREL16_LO          = 70,
525   R_PPC64_TPREL16_HI          = 71,
526   R_PPC64_TPREL16_HA          = 72,
527   R_PPC64_TPREL64             = 73,
528   R_PPC64_DTPREL16            = 74,
529   R_PPC64_DTPREL16_LO         = 75,
530   R_PPC64_DTPREL16_HI         = 76,
531   R_PPC64_DTPREL16_HA         = 77,
532   R_PPC64_DTPREL64            = 78,
533   R_PPC64_GOT_TLSGD16         = 79,
534   R_PPC64_GOT_TLSGD16_LO      = 80,
535   R_PPC64_GOT_TLSGD16_HI      = 81,
536   R_PPC64_GOT_TLSGD16_HA      = 82,
537   R_PPC64_GOT_TLSLD16         = 83,
538   R_PPC64_GOT_TLSLD16_LO      = 84,
539   R_PPC64_GOT_TLSLD16_HI      = 85,
540   R_PPC64_GOT_TLSLD16_HA      = 86,
541   R_PPC64_GOT_TPREL16_DS      = 87,
542   R_PPC64_GOT_TPREL16_LO_DS   = 88,
543   R_PPC64_GOT_TPREL16_HI      = 89,
544   R_PPC64_GOT_TPREL16_HA      = 90,
545   R_PPC64_GOT_DTPREL16_DS     = 91,
546   R_PPC64_GOT_DTPREL16_LO_DS  = 92,
547   R_PPC64_GOT_DTPREL16_HI     = 93,
548   R_PPC64_GOT_DTPREL16_HA     = 94,
549   R_PPC64_TPREL16_DS          = 95,
550   R_PPC64_TPREL16_LO_DS       = 96,
551   R_PPC64_TPREL16_HIGHER      = 97,
552   R_PPC64_TPREL16_HIGHERA     = 98,
553   R_PPC64_TPREL16_HIGHEST     = 99,
554   R_PPC64_TPREL16_HIGHESTA    = 100,
555   R_PPC64_DTPREL16_DS         = 101,
556   R_PPC64_DTPREL16_LO_DS      = 102,
557   R_PPC64_DTPREL16_HIGHER     = 103,
558   R_PPC64_DTPREL16_HIGHERA    = 104,
559   R_PPC64_DTPREL16_HIGHEST    = 105,
560   R_PPC64_DTPREL16_HIGHESTA   = 106,
561   R_PPC64_TLSGD               = 107,
562   R_PPC64_TLSLD               = 108,
563   R_PPC64_REL16               = 249,
564   R_PPC64_REL16_LO            = 250,
565   R_PPC64_REL16_HI            = 251,
566   R_PPC64_REL16_HA            = 252
567 };
568 
569 // ELF Relocation types for AArch64
570 
571 enum {
572   R_AARCH64_NONE                        = 0x100,
573 
574   R_AARCH64_ABS64                       = 0x101,
575   R_AARCH64_ABS32                       = 0x102,
576   R_AARCH64_ABS16                       = 0x103,
577   R_AARCH64_PREL64                      = 0x104,
578   R_AARCH64_PREL32                      = 0x105,
579   R_AARCH64_PREL16                      = 0x106,
580 
581   R_AARCH64_MOVW_UABS_G0                = 0x107,
582   R_AARCH64_MOVW_UABS_G0_NC             = 0x108,
583   R_AARCH64_MOVW_UABS_G1                = 0x109,
584   R_AARCH64_MOVW_UABS_G1_NC             = 0x10a,
585   R_AARCH64_MOVW_UABS_G2                = 0x10b,
586   R_AARCH64_MOVW_UABS_G2_NC             = 0x10c,
587   R_AARCH64_MOVW_UABS_G3                = 0x10d,
588   R_AARCH64_MOVW_SABS_G0                = 0x10e,
589   R_AARCH64_MOVW_SABS_G1                = 0x10f,
590   R_AARCH64_MOVW_SABS_G2                = 0x110,
591 
592   R_AARCH64_LD_PREL_LO19                = 0x111,
593   R_AARCH64_ADR_PREL_LO21               = 0x112,
594   R_AARCH64_ADR_PREL_PG_HI21            = 0x113,
595   R_AARCH64_ADD_ABS_LO12_NC             = 0x115,
596   R_AARCH64_LDST8_ABS_LO12_NC           = 0x116,
597 
598   R_AARCH64_TSTBR14                     = 0x117,
599   R_AARCH64_CONDBR19                    = 0x118,
600   R_AARCH64_JUMP26                      = 0x11a,
601   R_AARCH64_CALL26                      = 0x11b,
602 
603   R_AARCH64_LDST16_ABS_LO12_NC          = 0x11c,
604   R_AARCH64_LDST32_ABS_LO12_NC          = 0x11d,
605   R_AARCH64_LDST64_ABS_LO12_NC          = 0x11e,
606 
607   R_AARCH64_LDST128_ABS_LO12_NC         = 0x12b,
608 
609   R_AARCH64_ADR_GOT_PAGE                = 0x137,
610   R_AARCH64_LD64_GOT_LO12_NC            = 0x138,
611 
612   R_AARCH64_TLSLD_MOVW_DTPREL_G2        = 0x20b,
613   R_AARCH64_TLSLD_MOVW_DTPREL_G1        = 0x20c,
614   R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC     = 0x20d,
615   R_AARCH64_TLSLD_MOVW_DTPREL_G0        = 0x20e,
616   R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC     = 0x20f,
617   R_AARCH64_TLSLD_ADD_DTPREL_HI12       = 0x210,
618   R_AARCH64_TLSLD_ADD_DTPREL_LO12       = 0x211,
619   R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC    = 0x212,
620   R_AARCH64_TLSLD_LDST8_DTPREL_LO12     = 0x213,
621   R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC  = 0x214,
622   R_AARCH64_TLSLD_LDST16_DTPREL_LO12    = 0x215,
623   R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC = 0x216,
624   R_AARCH64_TLSLD_LDST32_DTPREL_LO12    = 0x217,
625   R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC = 0x218,
626   R_AARCH64_TLSLD_LDST64_DTPREL_LO12    = 0x219,
627   R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC = 0x21a,
628 
629   R_AARCH64_TLSIE_MOVW_GOTTPREL_G1      = 0x21b,
630   R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC   = 0x21c,
631   R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21   = 0x21d,
632   R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC = 0x21e,
633   R_AARCH64_TLSIE_LD_GOTTPREL_PREL19    = 0x21f,
634 
635   R_AARCH64_TLSLE_MOVW_TPREL_G2         = 0x220,
636   R_AARCH64_TLSLE_MOVW_TPREL_G1         = 0x221,
637   R_AARCH64_TLSLE_MOVW_TPREL_G1_NC      = 0x222,
638   R_AARCH64_TLSLE_MOVW_TPREL_G0         = 0x223,
639   R_AARCH64_TLSLE_MOVW_TPREL_G0_NC      = 0x224,
640   R_AARCH64_TLSLE_ADD_TPREL_HI12        = 0x225,
641   R_AARCH64_TLSLE_ADD_TPREL_LO12        = 0x226,
642   R_AARCH64_TLSLE_ADD_TPREL_LO12_NC     = 0x227,
643   R_AARCH64_TLSLE_LDST8_TPREL_LO12      = 0x228,
644   R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC   = 0x229,
645   R_AARCH64_TLSLE_LDST16_TPREL_LO12     = 0x22a,
646   R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC  = 0x22b,
647   R_AARCH64_TLSLE_LDST32_TPREL_LO12     = 0x22c,
648   R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC  = 0x22d,
649   R_AARCH64_TLSLE_LDST64_TPREL_LO12     = 0x22e,
650   R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC  = 0x22f,
651 
652   R_AARCH64_TLSDESC_ADR_PAGE            = 0x232,
653   R_AARCH64_TLSDESC_LD64_LO12_NC        = 0x233,
654   R_AARCH64_TLSDESC_ADD_LO12_NC         = 0x234,
655 
656   R_AARCH64_TLSDESC_CALL                = 0x239
657 };
658 
659 // ARM Specific e_flags
660 enum : unsigned {
661   EF_ARM_SOFT_FLOAT =     0x00000200U,
662   EF_ARM_VFP_FLOAT =      0x00000400U,
663   EF_ARM_EABI_UNKNOWN =   0x00000000U,
664   EF_ARM_EABI_VER1 =      0x01000000U,
665   EF_ARM_EABI_VER2 =      0x02000000U,
666   EF_ARM_EABI_VER3 =      0x03000000U,
667   EF_ARM_EABI_VER4 =      0x04000000U,
668   EF_ARM_EABI_VER5 =      0x05000000U,
669   EF_ARM_EABIMASK =       0xFF000000U
670 };
671 
672 // ELF Relocation types for ARM
673 // Meets 2.08 ABI Specs.
674 
675 enum {
676   R_ARM_NONE                  = 0x00,
677   R_ARM_PC24                  = 0x01,
678   R_ARM_ABS32                 = 0x02,
679   R_ARM_REL32                 = 0x03,
680   R_ARM_LDR_PC_G0             = 0x04,
681   R_ARM_ABS16                 = 0x05,
682   R_ARM_ABS12                 = 0x06,
683   R_ARM_THM_ABS5              = 0x07,
684   R_ARM_ABS8                  = 0x08,
685   R_ARM_SBREL32               = 0x09,
686   R_ARM_THM_CALL              = 0x0a,
687   R_ARM_THM_PC8               = 0x0b,
688   R_ARM_BREL_ADJ              = 0x0c,
689   R_ARM_TLS_DESC              = 0x0d,
690   R_ARM_THM_SWI8              = 0x0e,
691   R_ARM_XPC25                 = 0x0f,
692   R_ARM_THM_XPC22             = 0x10,
693   R_ARM_TLS_DTPMOD32          = 0x11,
694   R_ARM_TLS_DTPOFF32          = 0x12,
695   R_ARM_TLS_TPOFF32           = 0x13,
696   R_ARM_COPY                  = 0x14,
697   R_ARM_GLOB_DAT              = 0x15,
698   R_ARM_JUMP_SLOT             = 0x16,
699   R_ARM_RELATIVE              = 0x17,
700   R_ARM_GOTOFF32              = 0x18,
701   R_ARM_BASE_PREL             = 0x19,
702   R_ARM_GOT_BREL              = 0x1a,
703   R_ARM_PLT32                 = 0x1b,
704   R_ARM_CALL                  = 0x1c,
705   R_ARM_JUMP24                = 0x1d,
706   R_ARM_THM_JUMP24            = 0x1e,
707   R_ARM_BASE_ABS              = 0x1f,
708   R_ARM_ALU_PCREL_7_0         = 0x20,
709   R_ARM_ALU_PCREL_15_8        = 0x21,
710   R_ARM_ALU_PCREL_23_15       = 0x22,
711   R_ARM_LDR_SBREL_11_0_NC     = 0x23,
712   R_ARM_ALU_SBREL_19_12_NC    = 0x24,
713   R_ARM_ALU_SBREL_27_20_CK    = 0x25,
714   R_ARM_TARGET1               = 0x26,
715   R_ARM_SBREL31               = 0x27,
716   R_ARM_V4BX                  = 0x28,
717   R_ARM_TARGET2               = 0x29,
718   R_ARM_PREL31                = 0x2a,
719   R_ARM_MOVW_ABS_NC           = 0x2b,
720   R_ARM_MOVT_ABS              = 0x2c,
721   R_ARM_MOVW_PREL_NC          = 0x2d,
722   R_ARM_MOVT_PREL             = 0x2e,
723   R_ARM_THM_MOVW_ABS_NC       = 0x2f,
724   R_ARM_THM_MOVT_ABS          = 0x30,
725   R_ARM_THM_MOVW_PREL_NC      = 0x31,
726   R_ARM_THM_MOVT_PREL         = 0x32,
727   R_ARM_THM_JUMP19            = 0x33,
728   R_ARM_THM_JUMP6             = 0x34,
729   R_ARM_THM_ALU_PREL_11_0     = 0x35,
730   R_ARM_THM_PC12              = 0x36,
731   R_ARM_ABS32_NOI             = 0x37,
732   R_ARM_REL32_NOI             = 0x38,
733   R_ARM_ALU_PC_G0_NC          = 0x39,
734   R_ARM_ALU_PC_G0             = 0x3a,
735   R_ARM_ALU_PC_G1_NC          = 0x3b,
736   R_ARM_ALU_PC_G1             = 0x3c,
737   R_ARM_ALU_PC_G2             = 0x3d,
738   R_ARM_LDR_PC_G1             = 0x3e,
739   R_ARM_LDR_PC_G2             = 0x3f,
740   R_ARM_LDRS_PC_G0            = 0x40,
741   R_ARM_LDRS_PC_G1            = 0x41,
742   R_ARM_LDRS_PC_G2            = 0x42,
743   R_ARM_LDC_PC_G0             = 0x43,
744   R_ARM_LDC_PC_G1             = 0x44,
745   R_ARM_LDC_PC_G2             = 0x45,
746   R_ARM_ALU_SB_G0_NC          = 0x46,
747   R_ARM_ALU_SB_G0             = 0x47,
748   R_ARM_ALU_SB_G1_NC          = 0x48,
749   R_ARM_ALU_SB_G1             = 0x49,
750   R_ARM_ALU_SB_G2             = 0x4a,
751   R_ARM_LDR_SB_G0             = 0x4b,
752   R_ARM_LDR_SB_G1             = 0x4c,
753   R_ARM_LDR_SB_G2             = 0x4d,
754   R_ARM_LDRS_SB_G0            = 0x4e,
755   R_ARM_LDRS_SB_G1            = 0x4f,
756   R_ARM_LDRS_SB_G2            = 0x50,
757   R_ARM_LDC_SB_G0             = 0x51,
758   R_ARM_LDC_SB_G1             = 0x52,
759   R_ARM_LDC_SB_G2             = 0x53,
760   R_ARM_MOVW_BREL_NC          = 0x54,
761   R_ARM_MOVT_BREL             = 0x55,
762   R_ARM_MOVW_BREL             = 0x56,
763   R_ARM_THM_MOVW_BREL_NC      = 0x57,
764   R_ARM_THM_MOVT_BREL         = 0x58,
765   R_ARM_THM_MOVW_BREL         = 0x59,
766   R_ARM_TLS_GOTDESC           = 0x5a,
767   R_ARM_TLS_CALL              = 0x5b,
768   R_ARM_TLS_DESCSEQ           = 0x5c,
769   R_ARM_THM_TLS_CALL          = 0x5d,
770   R_ARM_PLT32_ABS             = 0x5e,
771   R_ARM_GOT_ABS               = 0x5f,
772   R_ARM_GOT_PREL              = 0x60,
773   R_ARM_GOT_BREL12            = 0x61,
774   R_ARM_GOTOFF12              = 0x62,
775   R_ARM_GOTRELAX              = 0x63,
776   R_ARM_GNU_VTENTRY           = 0x64,
777   R_ARM_GNU_VTINHERIT         = 0x65,
778   R_ARM_THM_JUMP11            = 0x66,
779   R_ARM_THM_JUMP8             = 0x67,
780   R_ARM_TLS_GD32              = 0x68,
781   R_ARM_TLS_LDM32             = 0x69,
782   R_ARM_TLS_LDO32             = 0x6a,
783   R_ARM_TLS_IE32              = 0x6b,
784   R_ARM_TLS_LE32              = 0x6c,
785   R_ARM_TLS_LDO12             = 0x6d,
786   R_ARM_TLS_LE12              = 0x6e,
787   R_ARM_TLS_IE12GP            = 0x6f,
788   R_ARM_PRIVATE_0             = 0x70,
789   R_ARM_PRIVATE_1             = 0x71,
790   R_ARM_PRIVATE_2             = 0x72,
791   R_ARM_PRIVATE_3             = 0x73,
792   R_ARM_PRIVATE_4             = 0x74,
793   R_ARM_PRIVATE_5             = 0x75,
794   R_ARM_PRIVATE_6             = 0x76,
795   R_ARM_PRIVATE_7             = 0x77,
796   R_ARM_PRIVATE_8             = 0x78,
797   R_ARM_PRIVATE_9             = 0x79,
798   R_ARM_PRIVATE_10            = 0x7a,
799   R_ARM_PRIVATE_11            = 0x7b,
800   R_ARM_PRIVATE_12            = 0x7c,
801   R_ARM_PRIVATE_13            = 0x7d,
802   R_ARM_PRIVATE_14            = 0x7e,
803   R_ARM_PRIVATE_15            = 0x7f,
804   R_ARM_ME_TOO                = 0x80,
805   R_ARM_THM_TLS_DESCSEQ16     = 0x81,
806   R_ARM_THM_TLS_DESCSEQ32     = 0x82
807 };
808 
809 // Mips Specific e_flags
810 enum : unsigned {
811   EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions
812   EF_MIPS_PIC       = 0x00000002, // Position independent code
813   EF_MIPS_CPIC      = 0x00000004, // Call object with Position independent code
814   EF_MIPS_ABI2      = 0x00000020,
815   EF_MIPS_32BITMODE = 0x00000100,
816   EF_MIPS_NAN2008   = 0x00000400, // Uses IEE 754-2008 NaN encoding
817   EF_MIPS_ABI_O32   = 0x00001000, // This file follows the first MIPS 32 bit ABI
818 
819   //ARCH_ASE
820   EF_MIPS_MICROMIPS = 0x02000000, // microMIPS
821   EF_MIPS_ARCH_ASE_M16 =
822                       0x04000000, // Has Mips-16 ISA extensions
823   //ARCH
824   EF_MIPS_ARCH_1    = 0x00000000, // MIPS1 instruction set
825   EF_MIPS_ARCH_2    = 0x10000000, // MIPS2 instruction set
826   EF_MIPS_ARCH_3    = 0x20000000, // MIPS3 instruction set
827   EF_MIPS_ARCH_4    = 0x30000000, // MIPS4 instruction set
828   EF_MIPS_ARCH_5    = 0x40000000, // MIPS5 instruction set
829   EF_MIPS_ARCH_32   = 0x50000000, // MIPS32 instruction set per linux not elf.h
830   EF_MIPS_ARCH_64   = 0x60000000, // MIPS64 instruction set per linux not elf.h
831   EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2
832   EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2
833   EF_MIPS_ARCH_32R6 = 0x90000000, // mips32r6
834   EF_MIPS_ARCH_64R6 = 0xa0000000, // mips64r6
835   EF_MIPS_ARCH      = 0xf0000000  // Mask for applying EF_MIPS_ARCH_ variant
836 };
837 
838 // ELF Relocation types for Mips
839 enum {
840   R_MIPS_NONE              =  0,
841   R_MIPS_16                =  1,
842   R_MIPS_32                =  2,
843   R_MIPS_REL32             =  3,
844   R_MIPS_26                =  4,
845   R_MIPS_HI16              =  5,
846   R_MIPS_LO16              =  6,
847   R_MIPS_GPREL16           =  7,
848   R_MIPS_LITERAL           =  8,
849   R_MIPS_GOT16             =  9,
850   R_MIPS_PC16              = 10,
851   R_MIPS_CALL16            = 11,
852   R_MIPS_GPREL32           = 12,
853   R_MIPS_UNUSED1           = 13,
854   R_MIPS_UNUSED2           = 14,
855   R_MIPS_SHIFT5            = 16,
856   R_MIPS_SHIFT6            = 17,
857   R_MIPS_64                = 18,
858   R_MIPS_GOT_DISP          = 19,
859   R_MIPS_GOT_PAGE          = 20,
860   R_MIPS_GOT_OFST          = 21,
861   R_MIPS_GOT_HI16          = 22,
862   R_MIPS_GOT_LO16          = 23,
863   R_MIPS_SUB               = 24,
864   R_MIPS_INSERT_A          = 25,
865   R_MIPS_INSERT_B          = 26,
866   R_MIPS_DELETE            = 27,
867   R_MIPS_HIGHER            = 28,
868   R_MIPS_HIGHEST           = 29,
869   R_MIPS_CALL_HI16         = 30,
870   R_MIPS_CALL_LO16         = 31,
871   R_MIPS_SCN_DISP          = 32,
872   R_MIPS_REL16             = 33,
873   R_MIPS_ADD_IMMEDIATE     = 34,
874   R_MIPS_PJUMP             = 35,
875   R_MIPS_RELGOT            = 36,
876   R_MIPS_JALR              = 37,
877   R_MIPS_TLS_DTPMOD32      = 38,
878   R_MIPS_TLS_DTPREL32      = 39,
879   R_MIPS_TLS_DTPMOD64      = 40,
880   R_MIPS_TLS_DTPREL64      = 41,
881   R_MIPS_TLS_GD            = 42,
882   R_MIPS_TLS_LDM           = 43,
883   R_MIPS_TLS_DTPREL_HI16   = 44,
884   R_MIPS_TLS_DTPREL_LO16   = 45,
885   R_MIPS_TLS_GOTTPREL      = 46,
886   R_MIPS_TLS_TPREL32       = 47,
887   R_MIPS_TLS_TPREL64       = 48,
888   R_MIPS_TLS_TPREL_HI16    = 49,
889   R_MIPS_TLS_TPREL_LO16    = 50,
890   R_MIPS_GLOB_DAT          = 51,
891   R_MIPS_PC21_S2           = 60,
892   R_MIPS_PC26_S2           = 61,
893   R_MIPS_PC18_S3           = 62,
894   R_MIPS_PC19_S2           = 63,
895   R_MIPS_PCHI16            = 64,
896   R_MIPS_PCLO16            = 65,
897   R_MIPS16_GOT16           = 102,
898   R_MIPS16_HI16            = 104,
899   R_MIPS16_LO16            = 105,
900   R_MIPS_COPY              = 126,
901   R_MIPS_JUMP_SLOT         = 127,
902   R_MICROMIPS_26_S1        = 133,
903   R_MICROMIPS_HI16         = 134,
904   R_MICROMIPS_LO16         = 135,
905   R_MICROMIPS_GOT16        = 138,
906   R_MICROMIPS_PC16_S1      = 141,
907   R_MICROMIPS_CALL16       = 142,
908   R_MICROMIPS_GOT_DISP     = 145,
909   R_MICROMIPS_GOT_PAGE     = 146,
910   R_MICROMIPS_GOT_OFST     = 147,
911   R_MICROMIPS_TLS_GD          = 162,
912   R_MICROMIPS_TLS_LDM         = 163,
913   R_MICROMIPS_TLS_DTPREL_HI16 = 164,
914   R_MICROMIPS_TLS_DTPREL_LO16 = 165,
915   R_MICROMIPS_TLS_TPREL_HI16  = 169,
916   R_MICROMIPS_TLS_TPREL_LO16  = 170,
917   R_MIPS_NUM               = 218,
918   R_MIPS_PC32              = 248
919 };
920 
921 // Special values for the st_other field in the symbol table entry for MIPS.
922 enum {
923   STO_MIPS_OPTIONAL        = 0x04,  // Symbol whose definition is optional
924   STO_MIPS_PLT             = 0x08,  // PLT entry related dynamic table record
925   STO_MIPS_PIC             = 0x20,  // PIC func in an object mixes PIC/non-PIC
926   STO_MIPS_MICROMIPS       = 0x80,  // MIPS Specific ISA for MicroMips
927   STO_MIPS_MIPS16          = 0xf0   // MIPS Specific ISA for Mips16
928 };
929 
930 // Hexagon Specific e_flags
931 // Release 5 ABI
932 enum {
933   // Object processor version flags, bits[3:0]
934   EF_HEXAGON_MACH_V2      = 0x00000001,   // Hexagon V2
935   EF_HEXAGON_MACH_V3      = 0x00000002,   // Hexagon V3
936   EF_HEXAGON_MACH_V4      = 0x00000003,   // Hexagon V4
937   EF_HEXAGON_MACH_V5      = 0x00000004,   // Hexagon V5
938 
939   // Highest ISA version flags
940   EF_HEXAGON_ISA_MACH     = 0x00000000,   // Same as specified in bits[3:0]
941                                           // of e_flags
942   EF_HEXAGON_ISA_V2       = 0x00000010,   // Hexagon V2 ISA
943   EF_HEXAGON_ISA_V3       = 0x00000020,   // Hexagon V3 ISA
944   EF_HEXAGON_ISA_V4       = 0x00000030,   // Hexagon V4 ISA
945   EF_HEXAGON_ISA_V5       = 0x00000040    // Hexagon V5 ISA
946 };
947 
948 // Hexagon specific Section indexes for common small data
949 // Release 5 ABI
950 enum {
951   SHN_HEXAGON_SCOMMON     = 0xff00,       // Other access sizes
952   SHN_HEXAGON_SCOMMON_1   = 0xff01,       // Byte-sized access
953   SHN_HEXAGON_SCOMMON_2   = 0xff02,       // Half-word-sized access
954   SHN_HEXAGON_SCOMMON_4   = 0xff03,       // Word-sized access
955   SHN_HEXAGON_SCOMMON_8   = 0xff04        // Double-word-size access
956 };
957 
958 // ELF Relocation types for Hexagon
959 // Release 5 ABI
960 enum {
961   R_HEX_NONE              =  0,
962   R_HEX_B22_PCREL         =  1,
963   R_HEX_B15_PCREL         =  2,
964   R_HEX_B7_PCREL          =  3,
965   R_HEX_LO16              =  4,
966   R_HEX_HI16              =  5,
967   R_HEX_32                =  6,
968   R_HEX_16                =  7,
969   R_HEX_8                 =  8,
970   R_HEX_GPREL16_0         =  9,
971   R_HEX_GPREL16_1         =  10,
972   R_HEX_GPREL16_2         =  11,
973   R_HEX_GPREL16_3         =  12,
974   R_HEX_HL16              =  13,
975   R_HEX_B13_PCREL         =  14,
976   R_HEX_B9_PCREL          =  15,
977   R_HEX_B32_PCREL_X       =  16,
978   R_HEX_32_6_X            =  17,
979   R_HEX_B22_PCREL_X       =  18,
980   R_HEX_B15_PCREL_X       =  19,
981   R_HEX_B13_PCREL_X       =  20,
982   R_HEX_B9_PCREL_X        =  21,
983   R_HEX_B7_PCREL_X        =  22,
984   R_HEX_16_X              =  23,
985   R_HEX_12_X              =  24,
986   R_HEX_11_X              =  25,
987   R_HEX_10_X              =  26,
988   R_HEX_9_X               =  27,
989   R_HEX_8_X               =  28,
990   R_HEX_7_X               =  29,
991   R_HEX_6_X               =  30,
992   R_HEX_32_PCREL          =  31,
993   R_HEX_COPY              =  32,
994   R_HEX_GLOB_DAT          =  33,
995   R_HEX_JMP_SLOT          =  34,
996   R_HEX_RELATIVE          =  35,
997   R_HEX_PLT_B22_PCREL     =  36,
998   R_HEX_GOTREL_LO16       =  37,
999   R_HEX_GOTREL_HI16       =  38,
1000   R_HEX_GOTREL_32         =  39,
1001   R_HEX_GOT_LO16          =  40,
1002   R_HEX_GOT_HI16          =  41,
1003   R_HEX_GOT_32            =  42,
1004   R_HEX_GOT_16            =  43,
1005   R_HEX_DTPMOD_32         =  44,
1006   R_HEX_DTPREL_LO16       =  45,
1007   R_HEX_DTPREL_HI16       =  46,
1008   R_HEX_DTPREL_32         =  47,
1009   R_HEX_DTPREL_16         =  48,
1010   R_HEX_GD_PLT_B22_PCREL  =  49,
1011   R_HEX_GD_GOT_LO16       =  50,
1012   R_HEX_GD_GOT_HI16       =  51,
1013   R_HEX_GD_GOT_32         =  52,
1014   R_HEX_GD_GOT_16         =  53,
1015   R_HEX_IE_LO16           =  54,
1016   R_HEX_IE_HI16           =  55,
1017   R_HEX_IE_32             =  56,
1018   R_HEX_IE_GOT_LO16       =  57,
1019   R_HEX_IE_GOT_HI16       =  58,
1020   R_HEX_IE_GOT_32         =  59,
1021   R_HEX_IE_GOT_16         =  60,
1022   R_HEX_TPREL_LO16        =  61,
1023   R_HEX_TPREL_HI16        =  62,
1024   R_HEX_TPREL_32          =  63,
1025   R_HEX_TPREL_16          =  64,
1026   R_HEX_6_PCREL_X         =  65,
1027   R_HEX_GOTREL_32_6_X     =  66,
1028   R_HEX_GOTREL_16_X       =  67,
1029   R_HEX_GOTREL_11_X       =  68,
1030   R_HEX_GOT_32_6_X        =  69,
1031   R_HEX_GOT_16_X          =  70,
1032   R_HEX_GOT_11_X          =  71,
1033   R_HEX_DTPREL_32_6_X     =  72,
1034   R_HEX_DTPREL_16_X       =  73,
1035   R_HEX_DTPREL_11_X       =  74,
1036   R_HEX_GD_GOT_32_6_X     =  75,
1037   R_HEX_GD_GOT_16_X       =  76,
1038   R_HEX_GD_GOT_11_X       =  77,
1039   R_HEX_IE_32_6_X         =  78,
1040   R_HEX_IE_16_X           =  79,
1041   R_HEX_IE_GOT_32_6_X     =  80,
1042   R_HEX_IE_GOT_16_X       =  81,
1043   R_HEX_IE_GOT_11_X       =  82,
1044   R_HEX_TPREL_32_6_X      =  83,
1045   R_HEX_TPREL_16_X        =  84,
1046   R_HEX_TPREL_11_X        =  85
1047 };
1048 
1049 // ELF Relocation types for S390/zSeries
1050 enum {
1051   R_390_NONE        =  0,
1052   R_390_8           =  1,
1053   R_390_12          =  2,
1054   R_390_16          =  3,
1055   R_390_32          =  4,
1056   R_390_PC32        =  5,
1057   R_390_GOT12       =  6,
1058   R_390_GOT32       =  7,
1059   R_390_PLT32       =  8,
1060   R_390_COPY        =  9,
1061   R_390_GLOB_DAT    = 10,
1062   R_390_JMP_SLOT    = 11,
1063   R_390_RELATIVE    = 12,
1064   R_390_GOTOFF      = 13,
1065   R_390_GOTPC       = 14,
1066   R_390_GOT16       = 15,
1067   R_390_PC16        = 16,
1068   R_390_PC16DBL     = 17,
1069   R_390_PLT16DBL    = 18,
1070   R_390_PC32DBL     = 19,
1071   R_390_PLT32DBL    = 20,
1072   R_390_GOTPCDBL    = 21,
1073   R_390_64          = 22,
1074   R_390_PC64        = 23,
1075   R_390_GOT64       = 24,
1076   R_390_PLT64       = 25,
1077   R_390_GOTENT      = 26,
1078   R_390_GOTOFF16    = 27,
1079   R_390_GOTOFF64    = 28,
1080   R_390_GOTPLT12    = 29,
1081   R_390_GOTPLT16    = 30,
1082   R_390_GOTPLT32    = 31,
1083   R_390_GOTPLT64    = 32,
1084   R_390_GOTPLTENT   = 33,
1085   R_390_PLTOFF16    = 34,
1086   R_390_PLTOFF32    = 35,
1087   R_390_PLTOFF64    = 36,
1088   R_390_TLS_LOAD    = 37,
1089   R_390_TLS_GDCALL  = 38,
1090   R_390_TLS_LDCALL  = 39,
1091   R_390_TLS_GD32    = 40,
1092   R_390_TLS_GD64    = 41,
1093   R_390_TLS_GOTIE12 = 42,
1094   R_390_TLS_GOTIE32 = 43,
1095   R_390_TLS_GOTIE64 = 44,
1096   R_390_TLS_LDM32   = 45,
1097   R_390_TLS_LDM64   = 46,
1098   R_390_TLS_IE32    = 47,
1099   R_390_TLS_IE64    = 48,
1100   R_390_TLS_IEENT   = 49,
1101   R_390_TLS_LE32    = 50,
1102   R_390_TLS_LE64    = 51,
1103   R_390_TLS_LDO32   = 52,
1104   R_390_TLS_LDO64   = 53,
1105   R_390_TLS_DTPMOD  = 54,
1106   R_390_TLS_DTPOFF  = 55,
1107   R_390_TLS_TPOFF   = 56,
1108   R_390_20          = 57,
1109   R_390_GOT20       = 58,
1110   R_390_GOTPLT20    = 59,
1111   R_390_TLS_GOTIE20 = 60,
1112   R_390_IRELATIVE   = 61
1113 };
1114 
1115 // ELF Relocation type for Sparc.
1116 enum {
1117   R_SPARC_NONE        = 0,
1118   R_SPARC_8           = 1,
1119   R_SPARC_16          = 2,
1120   R_SPARC_32          = 3,
1121   R_SPARC_DISP8       = 4,
1122   R_SPARC_DISP16      = 5,
1123   R_SPARC_DISP32      = 6,
1124   R_SPARC_WDISP30     = 7,
1125   R_SPARC_WDISP22     = 8,
1126   R_SPARC_HI22        = 9,
1127   R_SPARC_22          = 10,
1128   R_SPARC_13          = 11,
1129   R_SPARC_LO10        = 12,
1130   R_SPARC_GOT10       = 13,
1131   R_SPARC_GOT13       = 14,
1132   R_SPARC_GOT22       = 15,
1133   R_SPARC_PC10        = 16,
1134   R_SPARC_PC22        = 17,
1135   R_SPARC_WPLT30      = 18,
1136   R_SPARC_COPY        = 19,
1137   R_SPARC_GLOB_DAT    = 20,
1138   R_SPARC_JMP_SLOT    = 21,
1139   R_SPARC_RELATIVE    = 22,
1140   R_SPARC_UA32        = 23,
1141   R_SPARC_PLT32       = 24,
1142   R_SPARC_HIPLT22     = 25,
1143   R_SPARC_LOPLT10     = 26,
1144   R_SPARC_PCPLT32     = 27,
1145   R_SPARC_PCPLT22     = 28,
1146   R_SPARC_PCPLT10     = 29,
1147   R_SPARC_10          = 30,
1148   R_SPARC_11          = 31,
1149   R_SPARC_64          = 32,
1150   R_SPARC_OLO10       = 33,
1151   R_SPARC_HH22        = 34,
1152   R_SPARC_HM10        = 35,
1153   R_SPARC_LM22        = 36,
1154   R_SPARC_PC_HH22     = 37,
1155   R_SPARC_PC_HM10     = 38,
1156   R_SPARC_PC_LM22     = 39,
1157   R_SPARC_WDISP16     = 40,
1158   R_SPARC_WDISP19     = 41,
1159   R_SPARC_7           = 43,
1160   R_SPARC_5           = 44,
1161   R_SPARC_6           = 45,
1162   R_SPARC_DISP64      = 46,
1163   R_SPARC_PLT64       = 47,
1164   R_SPARC_HIX22       = 48,
1165   R_SPARC_LOX10       = 49,
1166   R_SPARC_H44         = 50,
1167   R_SPARC_M44         = 51,
1168   R_SPARC_L44         = 52,
1169   R_SPARC_REGISTER    = 53,
1170   R_SPARC_UA64        = 54,
1171   R_SPARC_UA16        = 55,
1172   R_SPARC_TLS_GD_HI22   = 56,
1173   R_SPARC_TLS_GD_LO10   = 57,
1174   R_SPARC_TLS_GD_ADD    = 58,
1175   R_SPARC_TLS_GD_CALL   = 59,
1176   R_SPARC_TLS_LDM_HI22  = 60,
1177   R_SPARC_TLS_LDM_LO10  = 61,
1178   R_SPARC_TLS_LDM_ADD   = 62,
1179   R_SPARC_TLS_LDM_CALL  = 63,
1180   R_SPARC_TLS_LDO_HIX22 = 64,
1181   R_SPARC_TLS_LDO_LOX10 = 65,
1182   R_SPARC_TLS_LDO_ADD   = 66,
1183   R_SPARC_TLS_IE_HI22   = 67,
1184   R_SPARC_TLS_IE_LO10   = 68,
1185   R_SPARC_TLS_IE_LD     = 69,
1186   R_SPARC_TLS_IE_LDX    = 70,
1187   R_SPARC_TLS_IE_ADD    = 71,
1188   R_SPARC_TLS_LE_HIX22  = 72,
1189   R_SPARC_TLS_LE_LOX10  = 73,
1190   R_SPARC_TLS_DTPMOD32  = 74,
1191   R_SPARC_TLS_DTPMOD64  = 75,
1192   R_SPARC_TLS_DTPOFF32  = 76,
1193   R_SPARC_TLS_DTPOFF64  = 77,
1194   R_SPARC_TLS_TPOFF32   = 78,
1195   R_SPARC_TLS_TPOFF64   = 79,
1196   R_SPARC_GOTDATA_HIX22 = 80,
1197   R_SPARC_GOTDATA_LOX22 = 81,
1198   R_SPARC_GOTDATA_OP_HIX22 = 82,
1199   R_SPARC_GOTDATA_OP_LOX22 = 83,
1200   R_SPARC_GOTDATA_OP    = 84
1201 };
1202 
1203 // Section header.
1204 struct Elf32_Shdr {
1205   Elf32_Word sh_name;      // Section name (index into string table)
1206   Elf32_Word sh_type;      // Section type (SHT_*)
1207   Elf32_Word sh_flags;     // Section flags (SHF_*)
1208   Elf32_Addr sh_addr;      // Address where section is to be loaded
1209   Elf32_Off  sh_offset;    // File offset of section data, in bytes
1210   Elf32_Word sh_size;      // Size of section, in bytes
1211   Elf32_Word sh_link;      // Section type-specific header table index link
1212   Elf32_Word sh_info;      // Section type-specific extra information
1213   Elf32_Word sh_addralign; // Section address alignment
1214   Elf32_Word sh_entsize;   // Size of records contained within the section
1215 };
1216 
1217 // Section header for ELF64 - same fields as ELF32, different types.
1218 struct Elf64_Shdr {
1219   Elf64_Word  sh_name;
1220   Elf64_Word  sh_type;
1221   Elf64_Xword sh_flags;
1222   Elf64_Addr  sh_addr;
1223   Elf64_Off   sh_offset;
1224   Elf64_Xword sh_size;
1225   Elf64_Word  sh_link;
1226   Elf64_Word  sh_info;
1227   Elf64_Xword sh_addralign;
1228   Elf64_Xword sh_entsize;
1229 };
1230 
1231 // Special section indices.
1232 enum {
1233   SHN_UNDEF     = 0,      // Undefined, missing, irrelevant, or meaningless
1234   SHN_LORESERVE = 0xff00, // Lowest reserved index
1235   SHN_LOPROC    = 0xff00, // Lowest processor-specific index
1236   SHN_HIPROC    = 0xff1f, // Highest processor-specific index
1237   SHN_LOOS      = 0xff20, // Lowest operating system-specific index
1238   SHN_HIOS      = 0xff3f, // Highest operating system-specific index
1239   SHN_ABS       = 0xfff1, // Symbol has absolute value; does not need relocation
1240   SHN_COMMON    = 0xfff2, // FORTRAN COMMON or C external global variables
1241   SHN_XINDEX    = 0xffff, // Mark that the index is >= SHN_LORESERVE
1242   SHN_HIRESERVE = 0xffff  // Highest reserved index
1243 };
1244 
1245 // Section types.
1246 enum : unsigned {
1247   SHT_NULL          = 0,  // No associated section (inactive entry).
1248   SHT_PROGBITS      = 1,  // Program-defined contents.
1249   SHT_SYMTAB        = 2,  // Symbol table.
1250   SHT_STRTAB        = 3,  // String table.
1251   SHT_RELA          = 4,  // Relocation entries; explicit addends.
1252   SHT_HASH          = 5,  // Symbol hash table.
1253   SHT_DYNAMIC       = 6,  // Information for dynamic linking.
1254   SHT_NOTE          = 7,  // Information about the file.
1255   SHT_NOBITS        = 8,  // Data occupies no space in the file.
1256   SHT_REL           = 9,  // Relocation entries; no explicit addends.
1257   SHT_SHLIB         = 10, // Reserved.
1258   SHT_DYNSYM        = 11, // Symbol table.
1259   SHT_INIT_ARRAY    = 14, // Pointers to initialization functions.
1260   SHT_FINI_ARRAY    = 15, // Pointers to termination functions.
1261   SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions.
1262   SHT_GROUP         = 17, // Section group.
1263   SHT_SYMTAB_SHNDX  = 18, // Indices for SHN_XINDEX entries.
1264   SHT_LOOS          = 0x60000000, // Lowest operating system-specific type.
1265   SHT_GNU_ATTRIBUTES= 0x6ffffff5, // Object attributes.
1266   SHT_GNU_HASH      = 0x6ffffff6, // GNU-style hash table.
1267   SHT_GNU_verdef    = 0x6ffffffd, // GNU version definitions.
1268   SHT_GNU_verneed   = 0x6ffffffe, // GNU version references.
1269   SHT_GNU_versym    = 0x6fffffff, // GNU symbol versions table.
1270   SHT_HIOS          = 0x6fffffff, // Highest operating system-specific type.
1271   SHT_LOPROC        = 0x70000000, // Lowest processor arch-specific type.
1272   // Fixme: All this is duplicated in MCSectionELF. Why??
1273   // Exception Index table
1274   SHT_ARM_EXIDX           = 0x70000001U,
1275   // BPABI DLL dynamic linking pre-emption map
1276   SHT_ARM_PREEMPTMAP      = 0x70000002U,
1277   //  Object file compatibility attributes
1278   SHT_ARM_ATTRIBUTES      = 0x70000003U,
1279   SHT_ARM_DEBUGOVERLAY    = 0x70000004U,
1280   SHT_ARM_OVERLAYSECTION  = 0x70000005U,
1281   SHT_HEX_ORDERED         = 0x70000000, // Link editor is to sort the entries in
1282                                         // this section based on their sizes
1283   SHT_X86_64_UNWIND       = 0x70000001, // Unwind information
1284 
1285   SHT_MIPS_REGINFO        = 0x70000006, // Register usage information
1286   SHT_MIPS_OPTIONS        = 0x7000000d, // General options
1287 
1288   SHT_HIPROC        = 0x7fffffff, // Highest processor arch-specific type.
1289   SHT_LOUSER        = 0x80000000, // Lowest type reserved for applications.
1290   SHT_HIUSER        = 0xffffffff  // Highest type reserved for applications.
1291 };
1292 
1293 // Section flags.
1294 enum : unsigned {
1295   // Section data should be writable during execution.
1296   SHF_WRITE = 0x1,
1297 
1298   // Section occupies memory during program execution.
1299   SHF_ALLOC = 0x2,
1300 
1301   // Section contains executable machine instructions.
1302   SHF_EXECINSTR = 0x4,
1303 
1304   // The data in this section may be merged.
1305   SHF_MERGE = 0x10,
1306 
1307   // The data in this section is null-terminated strings.
1308   SHF_STRINGS = 0x20,
1309 
1310   // A field in this section holds a section header table index.
1311   SHF_INFO_LINK = 0x40U,
1312 
1313   // Adds special ordering requirements for link editors.
1314   SHF_LINK_ORDER = 0x80U,
1315 
1316   // This section requires special OS-specific processing to avoid incorrect
1317   // behavior.
1318   SHF_OS_NONCONFORMING = 0x100U,
1319 
1320   // This section is a member of a section group.
1321   SHF_GROUP = 0x200U,
1322 
1323   // This section holds Thread-Local Storage.
1324   SHF_TLS = 0x400U,
1325 
1326   // This section is excluded from the final executable or shared library.
1327   SHF_EXCLUDE = 0x80000000U,
1328 
1329   // Start of target-specific flags.
1330 
1331   /// XCORE_SHF_CP_SECTION - All sections with the "c" flag are grouped
1332   /// together by the linker to form the constant pool and the cp register is
1333   /// set to the start of the constant pool by the boot code.
1334   XCORE_SHF_CP_SECTION = 0x800U,
1335 
1336   /// XCORE_SHF_DP_SECTION - All sections with the "d" flag are grouped
1337   /// together by the linker to form the data section and the dp register is
1338   /// set to the start of the section by the boot code.
1339   XCORE_SHF_DP_SECTION = 0x1000U,
1340 
1341   SHF_MASKOS   = 0x0ff00000,
1342 
1343   // Bits indicating processor-specific flags.
1344   SHF_MASKPROC = 0xf0000000,
1345 
1346   // If an object file section does not have this flag set, then it may not hold
1347   // more than 2GB and can be freely referred to in objects using smaller code
1348   // models. Otherwise, only objects using larger code models can refer to them.
1349   // For example, a medium code model object can refer to data in a section that
1350   // sets this flag besides being able to refer to data in a section that does
1351   // not set it; likewise, a small code model object can refer only to code in a
1352   // section that does not set this flag.
1353   SHF_X86_64_LARGE = 0x10000000,
1354 
1355   // All sections with the GPREL flag are grouped into a global data area
1356   // for faster accesses
1357   SHF_HEX_GPREL = 0x10000000,
1358 
1359   // Section contains text/data which may be replicated in other sections.
1360   // Linker must retain only one copy.
1361   SHF_MIPS_NODUPES = 0x01000000,
1362 
1363   // Linker must generate implicit hidden weak names.
1364   SHF_MIPS_NAMES   = 0x02000000,
1365 
1366   // Section data local to process.
1367   SHF_MIPS_LOCAL   = 0x04000000,
1368 
1369   // Do not strip this section.
1370   SHF_MIPS_NOSTRIP = 0x08000000,
1371 
1372   // Section must be part of global data area.
1373   SHF_MIPS_GPREL   = 0x10000000,
1374 
1375   // This section should be merged.
1376   SHF_MIPS_MERGE   = 0x20000000,
1377 
1378   // Address size to be inferred from section entry size.
1379   SHF_MIPS_ADDR    = 0x40000000,
1380 
1381   // Section data is string data by default.
1382   SHF_MIPS_STRING  = 0x80000000
1383 };
1384 
1385 // Section Group Flags
1386 enum : unsigned {
1387   GRP_COMDAT = 0x1,
1388   GRP_MASKOS = 0x0ff00000,
1389   GRP_MASKPROC = 0xf0000000
1390 };
1391 
1392 // Symbol table entries for ELF32.
1393 struct Elf32_Sym {
1394   Elf32_Word    st_name;  // Symbol name (index into string table)
1395   Elf32_Addr    st_value; // Value or address associated with the symbol
1396   Elf32_Word    st_size;  // Size of the symbol
1397   unsigned char st_info;  // Symbol's type and binding attributes
1398   unsigned char st_other; // Must be zero; reserved
1399   Elf32_Half    st_shndx; // Which section (header table index) it's defined in
1400 
1401   // These accessors and mutators correspond to the ELF32_ST_BIND,
1402   // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
getBindingElf32_Sym1403   unsigned char getBinding() const { return st_info >> 4; }
getTypeElf32_Sym1404   unsigned char getType() const { return st_info & 0x0f; }
setBindingElf32_Sym1405   void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
setTypeElf32_Sym1406   void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
setBindingAndTypeElf32_Sym1407   void setBindingAndType(unsigned char b, unsigned char t) {
1408     st_info = (b << 4) + (t & 0x0f);
1409   }
1410 };
1411 
1412 // BEGIN android-added for <elf.h> compat
ELF32_ST_TYPE(unsigned char st_info)1413 static inline unsigned char ELF32_ST_TYPE(unsigned char st_info) { return st_info & 0x0f; }
ELF64_ST_TYPE(unsigned char st_info)1414 static inline unsigned char ELF64_ST_TYPE(unsigned char st_info) { return st_info & 0x0f; }
1415 // END android-added for <elf.h> compat
1416 
1417 // Symbol table entries for ELF64.
1418 struct Elf64_Sym {
1419   Elf64_Word      st_name;  // Symbol name (index into string table)
1420   unsigned char   st_info;  // Symbol's type and binding attributes
1421   unsigned char   st_other; // Must be zero; reserved
1422   Elf64_Half      st_shndx; // Which section (header tbl index) it's defined in
1423   Elf64_Addr      st_value; // Value or address associated with the symbol
1424   Elf64_Xword     st_size;  // Size of the symbol
1425 
1426   // These accessors and mutators are identical to those defined for ELF32
1427   // symbol table entries.
getBindingElf64_Sym1428   unsigned char getBinding() const { return st_info >> 4; }
getTypeElf64_Sym1429   unsigned char getType() const { return st_info & 0x0f; }
setBindingElf64_Sym1430   void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
setTypeElf64_Sym1431   void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
setBindingAndTypeElf64_Sym1432   void setBindingAndType(unsigned char b, unsigned char t) {
1433     st_info = (b << 4) + (t & 0x0f);
1434   }
1435 };
1436 
1437 // The size (in bytes) of symbol table entries.
1438 enum {
1439   SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size
1440   SYMENTRY_SIZE64 = 24  // 64-bit symbol entry size.
1441 };
1442 
1443 // Symbol bindings.
1444 enum {
1445   STB_LOCAL = 0,   // Local symbol, not visible outside obj file containing def
1446   STB_GLOBAL = 1,  // Global symbol, visible to all object files being combined
1447   STB_WEAK = 2,    // Weak symbol, like global but lower-precedence
1448   STB_LOOS   = 10, // Lowest operating system-specific binding type
1449   STB_HIOS   = 12, // Highest operating system-specific binding type
1450   STB_LOPROC = 13, // Lowest processor-specific binding type
1451   STB_HIPROC = 15  // Highest processor-specific binding type
1452 };
1453 
1454 // Symbol types.
1455 enum {
1456   STT_NOTYPE  = 0,   // Symbol's type is not specified
1457   STT_OBJECT  = 1,   // Symbol is a data object (variable, array, etc.)
1458   STT_FUNC    = 2,   // Symbol is executable code (function, etc.)
1459   STT_SECTION = 3,   // Symbol refers to a section
1460   STT_FILE    = 4,   // Local, absolute symbol that refers to a file
1461   STT_COMMON  = 5,   // An uninitialized common block
1462   STT_TLS     = 6,   // Thread local data object
1463   STT_LOOS    = 7,   // Lowest operating system-specific symbol type
1464   STT_HIOS    = 8,   // Highest operating system-specific symbol type
1465   STT_GNU_IFUNC = 10, // GNU indirect function
1466   STT_LOPROC  = 13,  // Lowest processor-specific symbol type
1467   STT_HIPROC  = 15   // Highest processor-specific symbol type
1468 };
1469 
1470 enum {
1471   STV_DEFAULT   = 0,  // Visibility is specified by binding type
1472   STV_INTERNAL  = 1,  // Defined by processor supplements
1473   STV_HIDDEN    = 2,  // Not visible to other components
1474   STV_PROTECTED = 3   // Visible in other components but not preemptable
1475 };
1476 
1477 // Symbol number.
1478 enum {
1479   STN_UNDEF = 0
1480 };
1481 
1482 // Relocation entry, without explicit addend.
1483 struct Elf32_Rel {
1484   Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
1485   Elf32_Word r_info;   // Symbol table index and type of relocation to apply
1486 
1487   // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1488   // and ELF32_R_INFO macros defined in the ELF specification:
getSymbolElf32_Rel1489   Elf32_Word getSymbol() const { return (r_info >> 8); }
getTypeElf32_Rel1490   unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
setSymbolElf32_Rel1491   void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
setTypeElf32_Rel1492   void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
setSymbolAndTypeElf32_Rel1493   void setSymbolAndType(Elf32_Word s, unsigned char t) {
1494     r_info = (s << 8) + t;
1495   }
1496 };
1497 
1498 // Relocation entry with explicit addend.
1499 struct Elf32_Rela {
1500   Elf32_Addr  r_offset; // Location (file byte offset, or program virtual addr)
1501   Elf32_Word  r_info;   // Symbol table index and type of relocation to apply
1502   Elf32_Sword r_addend; // Compute value for relocatable field by adding this
1503 
1504   // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1505   // and ELF32_R_INFO macros defined in the ELF specification:
getSymbolElf32_Rela1506   Elf32_Word getSymbol() const { return (r_info >> 8); }
getTypeElf32_Rela1507   unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
setSymbolElf32_Rela1508   void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
setTypeElf32_Rela1509   void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
setSymbolAndTypeElf32_Rela1510   void setSymbolAndType(Elf32_Word s, unsigned char t) {
1511     r_info = (s << 8) + t;
1512   }
1513 };
1514 
1515 // Relocation entry, without explicit addend.
1516 struct Elf64_Rel {
1517   Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
1518   Elf64_Xword r_info;   // Symbol table index and type of relocation to apply.
1519 
1520   // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1521   // and ELF64_R_INFO macros defined in the ELF specification:
getSymbolElf64_Rel1522   Elf64_Word getSymbol() const { return (r_info >> 32); }
getTypeElf64_Rel1523   Elf64_Word getType() const {
1524     return (Elf64_Word) (r_info & 0xffffffffL);
1525   }
setSymbolElf64_Rel1526   void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
setTypeElf64_Rel1527   void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
setSymbolAndTypeElf64_Rel1528   void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
1529     r_info = ((Elf64_Xword)s << 32) + (t&0xffffffffL);
1530   }
1531 };
1532 
1533 // Relocation entry with explicit addend.
1534 struct Elf64_Rela {
1535   Elf64_Addr  r_offset; // Location (file byte offset, or program virtual addr).
1536   Elf64_Xword  r_info;   // Symbol table index and type of relocation to apply.
1537   Elf64_Sxword r_addend; // Compute value for relocatable field by adding this.
1538 
1539   // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1540   // and ELF64_R_INFO macros defined in the ELF specification:
getSymbolElf64_Rela1541   Elf64_Word getSymbol() const { return (r_info >> 32); }
getTypeElf64_Rela1542   Elf64_Word getType() const {
1543     return (Elf64_Word) (r_info & 0xffffffffL);
1544   }
setSymbolElf64_Rela1545   void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
setTypeElf64_Rela1546   void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
setSymbolAndTypeElf64_Rela1547   void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
1548     r_info = ((Elf64_Xword)s << 32) + (t&0xffffffffL);
1549   }
1550 };
1551 
1552 // Program header for ELF32.
1553 struct Elf32_Phdr {
1554   Elf32_Word p_type;   // Type of segment
1555   Elf32_Off  p_offset; // File offset where segment is located, in bytes
1556   Elf32_Addr p_vaddr;  // Virtual address of beginning of segment
1557   Elf32_Addr p_paddr;  // Physical address of beginning of segment (OS-specific)
1558   Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
1559   Elf32_Word p_memsz;  // Num. of bytes in mem image of segment (may be zero)
1560   Elf32_Word p_flags;  // Segment flags
1561   Elf32_Word p_align;  // Segment alignment constraint
1562 };
1563 
1564 // Program header for ELF64.
1565 struct Elf64_Phdr {
1566   Elf64_Word   p_type;   // Type of segment
1567   Elf64_Word   p_flags;  // Segment flags
1568   Elf64_Off    p_offset; // File offset where segment is located, in bytes
1569   Elf64_Addr   p_vaddr;  // Virtual address of beginning of segment
1570   Elf64_Addr   p_paddr;  // Physical addr of beginning of segment (OS-specific)
1571   Elf64_Xword  p_filesz; // Num. of bytes in file image of segment (may be zero)
1572   Elf64_Xword  p_memsz;  // Num. of bytes in mem image of segment (may be zero)
1573   Elf64_Xword  p_align;  // Segment alignment constraint
1574 };
1575 
1576 // Segment types.
1577 enum {
1578   PT_NULL    = 0, // Unused segment.
1579   PT_LOAD    = 1, // Loadable segment.
1580   PT_DYNAMIC = 2, // Dynamic linking information.
1581   PT_INTERP  = 3, // Interpreter pathname.
1582   PT_NOTE    = 4, // Auxiliary information.
1583   PT_SHLIB   = 5, // Reserved.
1584   PT_PHDR    = 6, // The program header table itself.
1585   PT_TLS     = 7, // The thread-local storage template.
1586   PT_LOOS    = 0x60000000, // Lowest operating system-specific pt entry type.
1587   PT_HIOS    = 0x6fffffff, // Highest operating system-specific pt entry type.
1588   PT_LOPROC  = 0x70000000, // Lowest processor-specific program hdr entry type.
1589   PT_HIPROC  = 0x7fffffff, // Highest processor-specific program hdr entry type.
1590 
1591   // x86-64 program header types.
1592   // These all contain stack unwind tables.
1593   PT_GNU_EH_FRAME  = 0x6474e550,
1594   PT_SUNW_EH_FRAME = 0x6474e550,
1595   PT_SUNW_UNWIND   = 0x6464e550,
1596 
1597   PT_GNU_STACK  = 0x6474e551, // Indicates stack executability.
1598   PT_GNU_RELRO  = 0x6474e552, // Read-only after relocation.
1599 
1600   // ARM program header types.
1601   PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info
1602   // These all contain stack unwind tables.
1603   PT_ARM_EXIDX   = 0x70000001,
1604   PT_ARM_UNWIND  = 0x70000001,
1605 
1606   // MIPS program header types.
1607   PT_MIPS_REGINFO  = 0x70000000,  // Register usage information.
1608   PT_MIPS_RTPROC   = 0x70000001,  // Runtime procedure table.
1609   PT_MIPS_OPTIONS  = 0x70000002   // Options segment.
1610 };
1611 
1612 // Segment flag bits.
1613 enum : unsigned {
1614   PF_X        = 1,         // Execute
1615   PF_W        = 2,         // Write
1616   PF_R        = 4,         // Read
1617   PF_MASKOS   = 0x0ff00000,// Bits for operating system-specific semantics.
1618   PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics.
1619 };
1620 
1621 // Dynamic table entry for ELF32.
1622 struct Elf32_Dyn
1623 {
1624   Elf32_Sword d_tag;            // Type of dynamic table entry.
1625   union
1626   {
1627       Elf32_Word d_val;         // Integer value of entry.
1628       Elf32_Addr d_ptr;         // Pointer value of entry.
1629   } d_un;
1630 };
1631 
1632 // Dynamic table entry for ELF64.
1633 struct Elf64_Dyn
1634 {
1635   Elf64_Sxword d_tag;           // Type of dynamic table entry.
1636   union
1637   {
1638       Elf64_Xword d_val;        // Integer value of entry.
1639       Elf64_Addr  d_ptr;        // Pointer value of entry.
1640   } d_un;
1641 };
1642 
1643 // Dynamic table entry tags.
1644 enum {
1645   DT_NULL         = 0,        // Marks end of dynamic array.
1646   DT_NEEDED       = 1,        // String table offset of needed library.
1647   DT_PLTRELSZ     = 2,        // Size of relocation entries in PLT.
1648   DT_PLTGOT       = 3,        // Address associated with linkage table.
1649   DT_HASH         = 4,        // Address of symbolic hash table.
1650   DT_STRTAB       = 5,        // Address of dynamic string table.
1651   DT_SYMTAB       = 6,        // Address of dynamic symbol table.
1652   DT_RELA         = 7,        // Address of relocation table (Rela entries).
1653   DT_RELASZ       = 8,        // Size of Rela relocation table.
1654   DT_RELAENT      = 9,        // Size of a Rela relocation entry.
1655   DT_STRSZ        = 10,       // Total size of the string table.
1656   DT_SYMENT       = 11,       // Size of a symbol table entry.
1657   DT_INIT         = 12,       // Address of initialization function.
1658   DT_FINI         = 13,       // Address of termination function.
1659   DT_SONAME       = 14,       // String table offset of a shared objects name.
1660   DT_RPATH        = 15,       // String table offset of library search path.
1661   DT_SYMBOLIC     = 16,       // Changes symbol resolution algorithm.
1662   DT_REL          = 17,       // Address of relocation table (Rel entries).
1663   DT_RELSZ        = 18,       // Size of Rel relocation table.
1664   DT_RELENT       = 19,       // Size of a Rel relocation entry.
1665   DT_PLTREL       = 20,       // Type of relocation entry used for linking.
1666   DT_DEBUG        = 21,       // Reserved for debugger.
1667   DT_TEXTREL      = 22,       // Relocations exist for non-writable segments.
1668   DT_JMPREL       = 23,       // Address of relocations associated with PLT.
1669   DT_BIND_NOW     = 24,       // Process all relocations before execution.
1670   DT_INIT_ARRAY   = 25,       // Pointer to array of initialization functions.
1671   DT_FINI_ARRAY   = 26,       // Pointer to array of termination functions.
1672   DT_INIT_ARRAYSZ = 27,       // Size of DT_INIT_ARRAY.
1673   DT_FINI_ARRAYSZ = 28,       // Size of DT_FINI_ARRAY.
1674   DT_RUNPATH      = 29,       // String table offset of lib search path.
1675   DT_FLAGS        = 30,       // Flags.
1676   DT_ENCODING     = 32,       // Values from here to DT_LOOS follow the rules
1677                               // for the interpretation of the d_un union.
1678 
1679   DT_PREINIT_ARRAY = 32,      // Pointer to array of preinit functions.
1680   DT_PREINIT_ARRAYSZ = 33,    // Size of the DT_PREINIT_ARRAY array.
1681 
1682   DT_LOOS         = 0x60000000, // Start of environment specific tags.
1683   DT_HIOS         = 0x6FFFFFFF, // End of environment specific tags.
1684   DT_LOPROC       = 0x70000000, // Start of processor specific tags.
1685   DT_HIPROC       = 0x7FFFFFFF, // End of processor specific tags.
1686 
1687   DT_GNU_HASH     = 0x6FFFFEF5, // Reference to the GNU hash table.
1688   DT_RELACOUNT    = 0x6FFFFFF9, // ELF32_Rela count.
1689   DT_RELCOUNT     = 0x6FFFFFFA, // ELF32_Rel count.
1690 
1691   DT_FLAGS_1      = 0X6FFFFFFB, // Flags_1.
1692   DT_VERSYM       = 0x6FFFFFF0, // The address of .gnu.version section.
1693   DT_VERDEF       = 0X6FFFFFFC, // The address of the version definition table.
1694   DT_VERDEFNUM    = 0X6FFFFFFD, // The number of entries in DT_VERDEF.
1695   DT_VERNEED      = 0X6FFFFFFE, // The address of the version Dependency table.
1696   DT_VERNEEDNUM   = 0X6FFFFFFF, // The number of entries in DT_VERNEED.
1697 
1698   // Mips specific dynamic table entry tags.
1699   DT_MIPS_RLD_VERSION   = 0x70000001, // 32 bit version number for runtime
1700                                       // linker interface.
1701   DT_MIPS_TIME_STAMP    = 0x70000002, // Time stamp.
1702   DT_MIPS_ICHECKSUM     = 0x70000003, // Checksum of external strings
1703                                       // and common sizes.
1704   DT_MIPS_IVERSION      = 0x70000004, // Index of version string
1705                                       // in string table.
1706   DT_MIPS_FLAGS         = 0x70000005, // 32 bits of flags.
1707   DT_MIPS_BASE_ADDRESS  = 0x70000006, // Base address of the segment.
1708   DT_MIPS_MSYM          = 0x70000007, // Address of .msym section.
1709   DT_MIPS_CONFLICT      = 0x70000008, // Address of .conflict section.
1710   DT_MIPS_LIBLIST       = 0x70000009, // Address of .liblist section.
1711   DT_MIPS_LOCAL_GOTNO   = 0x7000000a, // Number of local global offset
1712                                       // table entries.
1713   DT_MIPS_CONFLICTNO    = 0x7000000b, // Number of entries
1714                                       // in the .conflict section.
1715   DT_MIPS_LIBLISTNO     = 0x70000010, // Number of entries
1716                                       // in the .liblist section.
1717   DT_MIPS_SYMTABNO      = 0x70000011, // Number of entries
1718                                       // in the .dynsym section.
1719   DT_MIPS_UNREFEXTNO    = 0x70000012, // Index of first external dynamic symbol
1720                                       // not referenced locally.
1721   DT_MIPS_GOTSYM        = 0x70000013, // Index of first dynamic symbol
1722                                       // in global offset table.
1723   DT_MIPS_HIPAGENO      = 0x70000014, // Number of page table entries
1724                                       // in global offset table.
1725   DT_MIPS_RLD_MAP       = 0x70000016, // Address of run time loader map,
1726                                       // used for debugging.
1727   DT_MIPS_DELTA_CLASS       = 0x70000017, // Delta C++ class definition.
1728   DT_MIPS_DELTA_CLASS_NO    = 0x70000018, // Number of entries
1729                                           // in DT_MIPS_DELTA_CLASS.
1730   DT_MIPS_DELTA_INSTANCE    = 0x70000019, // Delta C++ class instances.
1731   DT_MIPS_DELTA_INSTANCE_NO = 0x7000001A, // Number of entries
1732                                           // in DT_MIPS_DELTA_INSTANCE.
1733   DT_MIPS_DELTA_RELOC       = 0x7000001B, // Delta relocations.
1734   DT_MIPS_DELTA_RELOC_NO    = 0x7000001C, // Number of entries
1735                                           // in DT_MIPS_DELTA_RELOC.
1736   DT_MIPS_DELTA_SYM         = 0x7000001D, // Delta symbols that Delta
1737                                           // relocations refer to.
1738   DT_MIPS_DELTA_SYM_NO      = 0x7000001E, // Number of entries
1739                                           // in DT_MIPS_DELTA_SYM.
1740   DT_MIPS_DELTA_CLASSSYM    = 0x70000020, // Delta symbols that hold
1741                                           // class declarations.
1742   DT_MIPS_DELTA_CLASSSYM_NO = 0x70000021, // Number of entries
1743                                           // in DT_MIPS_DELTA_CLASSSYM.
1744   DT_MIPS_CXX_FLAGS         = 0x70000022, // Flags indicating information
1745                                           // about C++ flavor.
1746   DT_MIPS_PIXIE_INIT        = 0x70000023, // Pixie information.
1747   DT_MIPS_SYMBOL_LIB        = 0x70000024, // Address of .MIPS.symlib
1748   DT_MIPS_LOCALPAGE_GOTIDX  = 0x70000025, // The GOT index of the first PTE
1749                                           // for a segment
1750   DT_MIPS_LOCAL_GOTIDX      = 0x70000026, // The GOT index of the first PTE
1751                                           // for a local symbol
1752   DT_MIPS_HIDDEN_GOTIDX     = 0x70000027, // The GOT index of the first PTE
1753                                           // for a hidden symbol
1754   DT_MIPS_PROTECTED_GOTIDX  = 0x70000028, // The GOT index of the first PTE
1755                                           // for a protected symbol
1756   DT_MIPS_OPTIONS           = 0x70000029, // Address of `.MIPS.options'.
1757   DT_MIPS_INTERFACE         = 0x7000002A, // Address of `.interface'.
1758   DT_MIPS_DYNSTR_ALIGN      = 0x7000002B, // Unknown.
1759   DT_MIPS_INTERFACE_SIZE    = 0x7000002C, // Size of the .interface section.
1760   DT_MIPS_RLD_TEXT_RESOLVE_ADDR = 0x7000002D, // Size of rld_text_resolve
1761                                               // function stored in the GOT.
1762   DT_MIPS_PERF_SUFFIX       = 0x7000002E, // Default suffix of DSO to be added
1763                                           // by rld on dlopen() calls.
1764   DT_MIPS_COMPACT_SIZE      = 0x7000002F, // Size of compact relocation
1765                                           // section (O32).
1766   DT_MIPS_GP_VALUE          = 0x70000030, // GP value for auxiliary GOTs.
1767   DT_MIPS_AUX_DYNAMIC       = 0x70000031, // Address of auxiliary .dynamic.
1768   DT_MIPS_PLTGOT            = 0x70000032, // Address of the base of the PLTGOT.
1769   DT_MIPS_RWPLT             = 0x70000034  // Points to the base
1770                                           // of a writable PLT.
1771 };
1772 
1773 // DT_FLAGS values.
1774 enum {
1775   DF_ORIGIN     = 0x01, // The object may reference $ORIGIN.
1776   DF_SYMBOLIC   = 0x02, // Search the shared lib before searching the exe.
1777   DF_TEXTREL    = 0x04, // Relocations may modify a non-writable segment.
1778   DF_BIND_NOW   = 0x08, // Process all relocations on load.
1779   DF_STATIC_TLS = 0x10  // Reject attempts to load dynamically.
1780 };
1781 
1782 // State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry.
1783 enum {
1784   DF_1_NOW        = 0x00000001, // Set RTLD_NOW for this object.
1785   DF_1_GLOBAL     = 0x00000002, // Set RTLD_GLOBAL for this object.
1786   DF_1_GROUP      = 0x00000004, // Set RTLD_GROUP for this object.
1787   DF_1_NODELETE   = 0x00000008, // Set RTLD_NODELETE for this object.
1788   DF_1_LOADFLTR   = 0x00000010, // Trigger filtee loading at runtime.
1789   DF_1_INITFIRST  = 0x00000020, // Set RTLD_INITFIRST for this object.
1790   DF_1_NOOPEN     = 0x00000040, // Set RTLD_NOOPEN for this object.
1791   DF_1_ORIGIN     = 0x00000080, // $ORIGIN must be handled.
1792   DF_1_DIRECT     = 0x00000100, // Direct binding enabled.
1793   DF_1_TRANS      = 0x00000200,
1794   DF_1_INTERPOSE  = 0x00000400, // Object is used to interpose.
1795   DF_1_NODEFLIB   = 0x00000800, // Ignore default lib search path.
1796   DF_1_NODUMP     = 0x00001000, // Object can't be dldump'ed.
1797   DF_1_CONFALT    = 0x00002000, // Configuration alternative created.
1798   DF_1_ENDFILTEE  = 0x00004000, // Filtee terminates filters search.
1799   DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time.
1800   DF_1_DISPRELPND = 0x00010000  // Disp reloc applied at run-time.
1801 };
1802 
1803 // DT_MIPS_FLAGS values.
1804 enum {
1805   RHF_NONE                    = 0x00000000, // No flags.
1806   RHF_QUICKSTART              = 0x00000001, // Uses shortcut pointers.
1807   RHF_NOTPOT                  = 0x00000002, // Hash size is not a power of two.
1808   RHS_NO_LIBRARY_REPLACEMENT  = 0x00000004, // Ignore LD_LIBRARY_PATH.
1809   RHF_NO_MOVE                 = 0x00000008, // DSO address may not be relocated.
1810   RHF_SGI_ONLY                = 0x00000010, // SGI specific features.
1811   RHF_GUARANTEE_INIT          = 0x00000020, // Guarantee that .init will finish
1812                                             // executing before any non-init
1813                                             // code in DSO is called.
1814   RHF_DELTA_C_PLUS_PLUS       = 0x00000040, // Contains Delta C++ code.
1815   RHF_GUARANTEE_START_INIT    = 0x00000080, // Guarantee that .init will start
1816                                             // executing before any non-init
1817                                             // code in DSO is called.
1818   RHF_PIXIE                   = 0x00000100, // Generated by pixie.
1819   RHF_DEFAULT_DELAY_LOAD      = 0x00000200, // Delay-load DSO by default.
1820   RHF_REQUICKSTART            = 0x00000400, // Object may be requickstarted
1821   RHF_REQUICKSTARTED          = 0x00000800, // Object has been requickstarted
1822   RHF_CORD                    = 0x00001000, // Generated by cord.
1823   RHF_NO_UNRES_UNDEF          = 0x00002000, // Object contains no unresolved
1824                                             // undef symbols.
1825   RHF_RLD_ORDER_SAFE          = 0x00004000  // Symbol table is in a safe order.
1826 };
1827 
1828 // ElfXX_VerDef structure version (GNU versioning)
1829 enum {
1830   VER_DEF_NONE    = 0,
1831   VER_DEF_CURRENT = 1
1832 };
1833 
1834 // VerDef Flags (ElfXX_VerDef::vd_flags)
1835 enum {
1836   VER_FLG_BASE = 0x1,
1837   VER_FLG_WEAK = 0x2,
1838   VER_FLG_INFO = 0x4
1839 };
1840 
1841 // Special constants for the version table. (SHT_GNU_versym/.gnu.version)
1842 enum {
1843   VER_NDX_LOCAL  = 0,      // Unversioned local symbol
1844   VER_NDX_GLOBAL = 1,      // Unversioned global symbol
1845   VERSYM_VERSION = 0x7fff, // Version Index mask
1846   VERSYM_HIDDEN  = 0x8000  // Hidden bit (non-default version)
1847 };
1848 
1849 // ElfXX_VerNeed structure version (GNU versioning)
1850 enum {
1851   VER_NEED_NONE = 0,
1852   VER_NEED_CURRENT = 1
1853 };
1854 
1855 struct ElfTypes32 {
1856   typedef Elf32_Addr Addr;
1857   typedef Elf32_Off Off;
1858   typedef Elf32_Half Half;
1859   typedef Elf32_Word Word;
1860   typedef Elf32_Sword Sword;
1861   typedef Elf32_Ehdr Ehdr;
1862   typedef Elf32_Shdr Shdr;
1863   typedef Elf32_Sym Sym;
1864   typedef Elf32_Rel Rel;
1865   typedef Elf32_Rela Rela;
1866   typedef Elf32_Phdr Phdr;
1867   typedef Elf32_Dyn Dyn;
1868 };
1869 
1870 struct ElfTypes64 {
1871   typedef Elf64_Addr Addr;
1872   typedef Elf64_Off Off;
1873   typedef Elf64_Half Half;
1874   typedef Elf64_Word Word;
1875   typedef Elf64_Sword Sword;
1876   typedef Elf64_Xword Xword;
1877   typedef Elf64_Sxword Sxword;
1878   typedef Elf64_Ehdr Ehdr;
1879   typedef Elf64_Shdr Shdr;
1880   typedef Elf64_Sym Sym;
1881   typedef Elf64_Rel Rel;
1882   typedef Elf64_Rela Rela;
1883   typedef Elf64_Phdr Phdr;
1884   typedef Elf64_Dyn Dyn;
1885 };
1886 
1887 // BEGIN android-changed
1888 #endif  // ART_RUNTIME_ELF_H_
1889 // END android-changed
1890